Acmella is a genus of flowering plants that belongs to the family Asteraceae. It consists of approximately 30 species of annual or perennial herbs, which are mainly native to the tropical and subtropical regions of South America. These plants are commonly known as "toothache plants" or "electric daisies" due to their unique characteristic of causing a tingling and numbing sensation when their flowers or leaves are chewed.
The leaves of Acmella plants are opposite and simple, with serrated margins, while the flowers are small and globular, arranged in compact inflorescences. They typically consist of bright yellow, orange, or red ray florets surrounding a cone-like structure formed by numerous tiny disc florets. These flowers possess a chemical compound called spilanthol, which is responsible for the tingling sensation they induce when consumed.
In traditional medicine, certain species of Acmella, such as Acmella oleracea, have been used as herbal remedies to alleviate toothaches, mouth ulcers, and other oral discomforts. The numbing effect of the plant is attributed to its local anesthetic and analgesic properties. Additionally, some studies suggest that Acmella plants may possess antioxidant, anti-inflammatory, antimicrobial, and anti-cancer properties, although further research is needed to confirm these potential medical benefits.
Apart from their medicinal use, Acmella plants also have culinary applications. The flowers or leaves are sometimes added to salads, soups, or stews to provide a unique tingling sensation and a mild peppery taste. In some cultures, they are used as a seasoning or spice to enhance the flavor of various dishes.
Overall, Acmella is a distinct genus of flowering plants known for their toothache-relieving properties,
